/*
 * Copyright 2021 the original author or authors.
 * <p>
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p>
 * https://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.openrewrite.java

import org.junit.jupiter.api.Test
import org.openrewrite.Recipe

interface AddLicenseHeaderTest : JavaRecipeTest {
    override val recipe: Recipe
        get() = AddLicenseHeader("""
            Copyright ${'$'}{CURRENT_YEAR} the original author or authors.
            <p>
            Licensed under the Apache License, Version 2.0 (the "License");
            you may not use this file except in compliance with the License.
            You may obtain a copy of the License at
        """.trimIndent())

    @Test
    fun addLicenseHeader(jp: JavaParser) = assertChanged(
        jp,
        before = """
            package com.sample;
            class Test {
            }
        """,
        after = """
            /*
             * Copyright 2021 the original author or authors.
             * <p>
             * Licensed under the Apache License, Version 2.0 (the "License");
             * you may not use this file except in compliance with the License.
             * You may obtain a copy of the License at
             */
            package com.sample;
            class Test {
            }
        """
    )

    @Test
    fun dontChangeExistingHeader(jp: JavaParser) = assertUnchanged(
        jp,
        before = """
            /*
             * My license header
             */
            package com.sample;
            class Test {
            }
        """
    )
}
